/* ==========================================================================
   CSS Globals & Variables
   Theme: High-End Monocromático (Black, White, Gray)
   ========================================================================== */

:root {
    /* Colors (Monochrome) */
    --color-black: #050505;
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-600: #52525b;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;

    /* Theme assignments */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-gray-50);
    --bg-dark: var(--color-black);

    --text-primary: var(--color-black);
    --text-secondary: var(--color-gray-600);
    --text-light: var(--color-white);
    --text-light-muted: var(--color-gray-300);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Spacing & Layout */
    --container-max: 1200px;
    --section-padding: 6rem;
    --border-radius: 8px;
    --border-radius-lg: 16px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-normal);
}

ul,
ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Layout Classes
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding) 0;
}

.block-dark {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.block-dark h1,
.block-dark h2,
.block-dark h3,
.block-dark h4 {
    color: var(--text-light);
}

.block-dark p {
    color: var(--text-light-muted);
}

/* ==========================================================================
   Typography Blocks
   ========================================================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem auto;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    font-weight: 800;
}

.section-desc {
    font-size: 1.125rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-gray-800);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

/* ==========================================================================
   Header & Navbar styles (Global)
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: transform var(--transition-normal), background var(--transition-normal);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.75rem;
    line-height: 1;
    letter-spacing: -0.02em;
}

.logo-subtext {
    font-family: var(--font-body);
    font-size: 0.75rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    /* Garante alinhamento vertical */
}

.nav-list {
    display: flex;
    align-items: center;
    /* Centraliza os itens verticalmente */
    gap: 2rem;
}

.nav-item {
    display: flex;
    align-items: center;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding: 0.5rem 0;
    display: inline-flex;
    align-items: center;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--color-black);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Dropdown Menu Styles */
.has-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
}

.dropdown-arrow {
    font-size: 0.6rem;
    transition: transform var(--transition-fast);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius);
    padding: 0.5rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-link {
    display: block;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.dropdown-link:hover {
    background-color: var(--color-gray-50);
    color: var(--text-primary);
    padding-left: 2rem;
    /* micro-animation */
}

/* Donate Button in Header */
.donate-btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    /* To stay above mobile menu */
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-normal);
}

.hamburger::before {
    top: -8px;
    left: 0;
}

.hamburger::after {
    bottom: -8px;
    left: 0;
}

.menu-toggle.active .hamburger {
    background-color: transparent;
}

.menu-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.menu-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* Navigation Responsive Mobile-First adjustments */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right var(--transition-slow) cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 999;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .nav-link {
        font-size: 1.5rem;
        font-weight: 600;
    }

    /* Mobile Dropdown styles */
    .has-dropdown {
        width: 100%;
        text-align: center;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        display: none;
        /* Controlled by JS or CSS hover depending on implementation */
        padding-top: 1rem;
    }

    .has-dropdown.active .dropdown-menu {
        display: block;
    }

    .dropdown-link {
        font-size: 1.125rem;
        padding: 0.5rem;
    }
}

/* ==========================================================================
   Animations (Reveal on Scroll)
   ========================================================================== */
.reveal {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1) var(--delay, 0ms),
                transform 0.8s cubic-bezier(0.5, 0, 0, 1) var(--delay, 0ms),
                visibility 0s linear var(--delay, 0ms);
}

.reveal.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1) var(--delay, 0ms),
                transform 0.8s cubic-bezier(0.5, 0, 0, 1) var(--delay, 0ms);
}

.fade-up {
    transform: translateY(30px);
}

.fade-up.active {
    transform: translateY(0);
}

.slide-left {
    transform: translateX(40px);
}

.slide-left.active {
    transform: translateX(0);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}